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For a distinguished and appropriately documented biography by an American author, Fifteen thousand dollars ($15,000).

Every Living Thing: The Great and Deadly Race to Know All Life, by Jason Roberts (Random House)

A beautifully written double biography of Carl Linnaeus and Georges-Louis de Buffon, 18th century contemporaries who devoted their lives to identifying and describing nature’s secrets, and who continue to influence how we understand the world.

Jason Roberts accepts the 2025 Pulitzer Prize for Biography. (David Dini/The Pulitzer Prizes)

Winning Work

Every Living Thing: The Great and Deadly Race to Know All Life

Every Living Thing by Jason Roberts

An epic, extraordinary account of scientific rivalry and obsession in the quest to survey all of life on Earth—a competition “with continued repercussions for Western views of race. [This] vivid double biography is a passionate corrective” (The New York Times Book Review, Editors’ Choice).

“[A] vibrant scientific saga . . . at once important, outrageous, enlightening, entertaining, enduring, and still evolving.”—Dava Sobel, author of Longitude

FINALIST FOR THE PEN/E.O. WILSON LITERARY SCIENCE WRITING AWARD • A KIRKUS REVIEWS BEST BOOK OF THE YEAR

In the eighteenth century, two men—exact contemporaries and polar opposites—dedicated their lives to the same daunting task: identifying and describing all life on Earth. Carl Linnaeus, a pious Swedish doctor with a huckster’s flair, believed that life belonged in tidy, static categories. Georges-Louis de Buffon, an aristocratic polymath and keeper of France’s royal garden, viewed life as a dynamic swirl of complexities. Each began his task believing it to be difficult but not impossible: How could the planet possibly hold more than a few thousand species—or as many could fit on Noah’s Ark?

Both fell far short of their goal, but in the process they articulated starkly divergent views on nature, the future of the Earth, and humanity itself. Linnaeus gave the world such concepts as mammal, primate, and Homo sapiens, but he also denied that species change and he promulgated racist pseudoscience. Buffon formulated early prototypes of evolution and genetics, warned of global climate change, and argued passionately against prejudice. The clash of their conflicting worldviews continued well after their deaths, as their successors contended for dominance in the emerging science that came to be called biology.

In Every Living Thing, Jason Roberts weaves a sweeping, unforgettable narrative spell, exploring the intertwined lives and legacies of Linnaeus and Buffon—as well as the groundbreaking, often fatal adventures of their acolytes—to trace an arc of insight and discovery that extends across three centuries into the present day.

Biography

Jason Roberts is a writer of fiction and nonfiction. His previous book, A Sense of the World: How a Blind Man Became History’s Greatest Traveler, was a national bestseller and finalist for the National Book Critics Circle Award. A contributor to McSweeney’s, The Believer, and other publications, he lives in Northern California.

Finalists

Nominated as finalists in Biography in 2025:

Amy Reading

A meticulous rendering of the life of the pioneering but unheralded magazine editor who helped refashion America’s mid-century culture by identifying and publishing some of the country’s notable literary figures.

David Greenberg

An exhaustively researched and insightful portrait of the civil rights activist and Georgia Congressman that breaks new ground by documenting his life after the 1960s, against the backdrop of new Black political strength and more recent racial justice protests.

The Jury

Jeffrey C. Stewart(Chair)*

Distinguished Professor of Black Studies/MacArthur Endowed Chair, University of California, Santa Barbara

Beverly Gage

John Lewis Gaddis Professor of History, Yale University

Peniel E. Joseph

Professor of History/Distinguished Service Professor, University of Texas at Austin

Carla Kaplan

Davis Distinguished Professor of American Literature, Northeastern University

Richard Tofel

Principal, Gallatin Advisory; Former President, ProPublica

Winners in Biography

Jonathan Eig

A revelatory portrait of Martin Luther King, Jr. that draws on new sources to enrich our understanding of each stage of the civil rights leader’s life, exploring his strengths and weaknesses, including the self-questioning and depression that accompanied his determination.

Beverly Gage

A deeply researched and nuanced look at one of the most polarizing figures in U.S. history that depicts the longtime FBI director in all his complexity, with monumental achievements and crippling flaws.

the late Winfred Rembert as told to Erin I. Kelly

A searing first-person illustrated account of an artist’s life during the 1950s and 1960s in an unreconstructed corner of the deep South–an account of abuse, endurance, imagination, and aesthetic transformation.

the late Les Payne and Tamara Payne

A powerful and revelatory account of the civil rights activist, built from dozens of interviews, offering insight into his character, beliefs and the forces that shaped him.

2025 Prize Winners

Staff of The Wall Street Journal

For chronicling political and personal shifts of the richest person in the world, Elon Musk, including his turn to conservative politics, his use of legal and illegal drugs and his private conversations with Russian President Vladimir Putin.